SU123482A1 - The method of obtaining synthetic flocta nta - Google Patents
The method of obtaining synthetic flocta ntaInfo
- Publication number
- SU123482A1 SU123482A1 SU615708A SU615708A SU123482A1 SU 123482 A1 SU123482 A1 SU 123482A1 SU 615708 A SU615708 A SU 615708A SU 615708 A SU615708 A SU 615708A SU 123482 A1 SU123482 A1 SU 123482A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- obtaining synthetic
- flocta
- nta
- synthetic
- flocta nta
- Prior art date
Links
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
В насто щее врем синтетический флокул нт - гидролизованный полиакрилонитрил получают путем неполного щелочного гидролиза полиакрилонитрила .At present, synthetic flocculation - hydrolyzed polyacrylonitrile is obtained by partial alkaline hydrolysis of polyacrylonitrile.
Предлагаемый способ получени синтетического флокул нта отличаетс ОТ известных тем, что в качестве катализатора примен ют металлическую медь. При ЭТОМ в 3-4 раза сокращаетс врем , потребное дл осуществлени процесса гидролиза и обеспечиваетс возврат в производство порощка металлической меди, что значительно снижает себестоимость ГОТОВОЙ продукции.The proposed method for producing synthetic flocculant differs from known ones in that metallic copper is used as a catalyst. At IT, the time required for the hydrolysis process is reduced by a factor of 3–4 and the metallic copper powder is returned to production, which significantly reduces the cost of the FINISHED products.
Дл осуществлени предлагаемого способа 10 вес. ч. измельченного полинака помещают в круглодонную колбу с мещалкой и обратным холодильником . Туда же добавл ют раствор щелочи и воду (4 вес. ч. NaOH и 260 вес. ч. воды) и 0,02 вес. ч. порошкообразной меди. Смесь кип т т в течение 2,5 час., охлаждают и примен ют в качестве флокул нта; в зкость его должна равн тьс 5, а содержание азота в сухом продукте - 20-22 %.To implement the proposed method 10 weight. including crushed polink is placed in a round-bottom flask with a meschalka and reflux condenser. Alkali solution and water (4 parts by weight of NaOH and 260 parts by weight of water) and 0.02 weight. including powdered copper. The mixture is boiled for 2.5 hours, cooled and used as flocculant; its viscosity should be 5, and the nitrogen content in the dry product should be 20-22%.
Дл получени сухого продукта можно примен ть различные методы , например, распылительную сушку, осаждение метанолом и др. При осаждении метаноло.м полученный указанным выще способом раствор выливают в 10-кратное количество метилового спирта; выпавп1ий полимер расчлен ют на кусочки и высущивают на воздухе.Various methods can be used to obtain a dry product, for example, spray drying, precipitation with methanol, etc. When methanol is precipitated, the solution obtained by the above method is poured into 10-fold amount of methyl alcohol; The loose polymer is dissected into pieces and air-dried.
При увеличении количества щелочи в процессе гидролиза можно получать продукты гидролиза с меньщим содержанием азота. Эти продукты менее в зки и, как правило, менее эффективны.By increasing the amount of alkali in the process of hydrolysis, you can get the products of hydrolysis with a lower nitrogen content. These products are less viscous and are generally less effective.
Предмет изобретени Subject invention
Спасоб получени синтетическото флокул нта - гидролизованного иолиакрилонитрила путем неполного щелочного гидролиза полиакрилони-трила , отличающийс тем, что в качестве катализатора примен ют металлическую медь.Rescuing the production of synthetic flocculate hydrolyzed acyl acrylonitrile by partial alkaline hydrolysis of polyacrylonyl-triline, characterized in that metallic copper is used as a catalyst.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU615708A SU123482A1 (en) | 1959-01-05 | 1959-01-05 | The method of obtaining synthetic flocta nta |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU615708A SU123482A1 (en) | 1959-01-05 | 1959-01-05 | The method of obtaining synthetic flocta nta |
Publications (1)
Publication Number | Publication Date |
---|---|
SU123482A1 true SU123482A1 (en) | 1959-11-30 |
Family
ID=48395039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU615708A SU123482A1 (en) | 1959-01-05 | 1959-01-05 | The method of obtaining synthetic flocta nta |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU123482A1 (en) |
-
1959
- 1959-01-05 SU SU615708A patent/SU123482A1/en active
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